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Preparation method of catalyst for methanol electrocatalytic reforming

A reforming catalyst and electrocatalysis technology, applied in the field of materials, can solve the problems that MOFs are rarely used in the field of catalysis, and achieve the effects of shortening the preparation time, making the preparation method simple and easy, and reducing costs

Inactive Publication Date: 2018-05-08
EAST CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this reason, MOFs are rarely used in the field of catalysis

Method used

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  • Preparation method of catalyst for methanol electrocatalytic reforming
  • Preparation method of catalyst for methanol electrocatalytic reforming
  • Preparation method of catalyst for methanol electrocatalytic reforming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Measure the mixed solution of 2mL deionized water, 2mL ethanol and 32mL DMF in a 100mL blue cap bottle, then weigh 0.12g BDC and dissolve it in the mixed solution, then dissolve the same molar amount of CuCl2• 2H2O and CoCl2• 6H2O, add 0.8 mL of triethylamine, stirred rapidly for 5 minutes, screwed on the bottle cap and continued ultrasonic reaction for 8 hours (1600W, 40KHZ). The precursor obtained above was centrifuged, then washed 5 times with absolute ethanol, and CoCu-BDC was obtained by freeze-drying, and its TEM and AFM photos and XRD patterns were as follows: figure 1 , figure 2 as well as image 3 As shown, the structure of CoCu-BDC MOF nanosheets can be seen from the TEM image. Through the AFM test, the thickness of the ultra-thin MOF nanosheets is 3-5 nm, and the wide-angle XRD results are consistent with the structure of CoCu-BDC materials reported in the literature.

[0025] The obtained nanosheet MOF material and carbon black were mixed at a mass ratio ...

Embodiment 2

[0028] Measure the mixed solution of 2mL deionized water, 2mL ethanol and 32mL DMF in a 100mL blue cap bottle, then weigh 0.12gBDC and dissolve it in the mixed solution, then dissolve the same molar amount of CoCl2• 6H2O in it, then add 0.8mL triethyl Amine, stirred rapidly for 5 minutes, screwed on the bottle cap and continued ultrasonic reaction for 8 hours (1600W, 40KHZ). The precursor obtained above was centrifuged, washed five times with absolute ethanol, and CoCu-BDC was obtained by freeze-drying. The structure of the obtained nanosheet MOF material was characterized by TEM, SEM and XRD. The CoCu-BDC MOF nanosheet structure can be seen from the TEM image. Through AFM testing, the thickness of the ultrathin MOF nanosheet is 3-5 nm. The wide-angle XRD results are consistent with the structure of Co-BDC materials reported in the literature.

[0029] The obtained nanosheet MOF material and carbon black were mixed at a mass ratio of 1:1, dispersed in a mixed solution of deio...

Embodiment 3

[0032] Measure the mixed solution of 2mL deionized water, 2mL ethanol and 32mL DMF in a 100mL blue cap bottle, then weigh 0.12gBDC and dissolve it in the mixed solution, then dissolve the same molar amount of CuCl2• 2H2O in it, then add 0.8mL triethyl Amine, stirred rapidly for 5 minutes, screwed on the bottle cap and continued ultrasonic reaction for 8 hours (1600W, 40KHZ). The precursor obtained above was centrifuged, washed five times with absolute ethanol, and CoCu-BDC was obtained by freeze-drying. The structure of the obtained nanosheet MOF material was characterized by TEM, SEM and XRD. The coiled structure of CoCu-BDC MOF nanosheets can be seen from the TEM image. Through AFM test, the thickness of the ultrathin MOF nanosheets is 3-5 nm , and its wide-angle XRD results are consistent with the structure of Cu-BDC materials reported in the literature.

[0033] The obtained nanosheet MOF material and carbon black were mixed at a mass ratio of 1:1, dispersed in a mixed so...

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Abstract

The invention discloses a preparation method of a catalyst for methanol electrocatalytic reforming. The method comprises the following steps: first, dissolving a certain amount of terephthalic acid (BDC) in a mixed solution with a certain proportion of ethanol, deionized water and N,N-dimethylformamide (DMF), then dissolving CuCl2.2H2O and CoCl2.6H2O in the mixed solution, adding triethylamine (TEA), carrying out stirring for a plurality of minutes, carrying out ultrasonic treatment under a sealing condition for a plurality of hours for generating a double-metal organic framework compound of copper ions, cobalt ions and the BDC, carrying out ultrasonic centrifugation for a plurality of times, carrying out drying at room temperature to obtain a sample (marked as CoCu-BDC), mixing the samplewith carbon black according to a certain proportion, adding a certain amount of Nafion solution, and carrying out ultrasonic dispersion in a mixed solution of ethanol and water, so as to obtaining catalyst slurry finally. The CoCu-BDC prepared by the method provided by the invention is dispersed in the slurry in the form of ultra-thin nanometer sheets in the catalyst, the charge conduction capability is good, and the very high methanol electrocatalytic reforming performance is achieved. In addition, the preparation method is simple and feasible, has a short preparation time, and has a good industrial application prospect.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method for preparing a methanol electrocatalytic reforming catalyst. Background technique [0002] More and more energy shortages and increasingly prominent environmental problems have become the focus of global attention. Finding carbon-free, clean and sustainable new energy has become a top priority. Hydrogen energy (H 2 ) is considered to be one of the most promising and potential alternative energy sources due to its high calorific value, non-pollution and simple preparation. Electrochemical water splitting is the most attractive H 2 One of the production methods. Water electrolysis involves hydrogen evolution reaction (HER) and oxygen (O 2 ) precipitation reaction (OER). However, the rate-determining step of the overall OER reaction requires a high overpotential, which generally reduces energy conversion efficiency and increases energy consumption. Noble metal catalysts (Pt...

Claims

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Application Information

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IPC IPC(8): B01J31/22C25B11/06C25B1/04
CPCC25B1/04B01J31/1691B01J31/2239B01J2531/845B01J2531/16B01J2531/0216C25B11/095B01J35/23B01J35/33Y02E60/36
Inventor 魏新发陈立松施剑林
Owner EAST CHINA NORMAL UNIVERSITY
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